The 52-foot-tall Kilauea Lighthouse hasn't been an active structure since 1976, but it remains a popular tourist attraction for numerous reasons. One, it boasts outstanding panoramas — Kilauea is perched on Kauai's northernmost tip with stunning views of the island's turbulent northern waves. Two, it shares space with the Kilauea Point National Wildlife Refuge, where migratory seabirds nest. And three, there's a chance you'll catch a glimpse of some humpback whales swimming through the waters during the winter.

Some travelers suggest you make a quick stop here on your way to or from Kauai's airport. But stay a bit longer if you're really into birds: Laysan albatrosses, red-footed boobies, Hawaiian geese and wandering tattlers are just a few of the breeds that nest here. The visitors center provides details on which birds can be spotted at what times of year. You can also borrow a set of binoculars here.

For $5, you can explore the grounds of the wildlife refuge and enter the lighthouse. Children younger than 16 get in for free. Both the refuge and lighthouse are open daily from 10 a.m. to 4 p.m. Visit the refuge's website for further details.